MODEL CONSTRAINT: COMDD = 1; in between the two lines above, but it does not work. I looked in the Manual, but since I am new at this, could you please advise how to get it to work? MDD is coded 1 and 0 in the file. I want to select the individuals who scored 1 on MDD and see if there are any differences on RCMASPPO by COND for these people.